Write down the exact value of:
a) cos 90
b) sin 90
c) tan 0

Answers

Answer 1

Answer:

The exact value of

cos90 is 0

sin90 is 1

tan90 is indeterminate.

Answer 2

Answer:

[tex] \cos(90) = 0 \\ \sin(90) = 1 \\ \tan(0) = 0[/tex]


Related Questions

Please help ASAP! Due very soon

Answers

the slope of BC is 3/2

Jack has a rectangle garden that measures 4 feet wide by 3 feet long he wants to increase the area to 56 feet

Answers

Answer:

then you would have as length or width 8 by 7 feet, or any other factors of 56 as the width or length. Since you want to increase the area.

If he adds 4ft to the length and the width the garden would then be 7x8, which would give him an area of 56ft (7x8=56)

Jason needs to run 30 laps before basketball practice. His coach makes a deal with the team that on Friday’s they only need to complete 5/6 of that.



Write an expression or equation to represent the number of laps to complete on Friday.

Answers

Answer:

a little bit less than 30

Step-by-step explanation:

Find X. Round to nearest tenth. Use pic

Answers

Answer:

X=200

First your going to add all sides together. Once you finish you should get

50+55+90=195

after you got your answer your going to round to the tenths if it's higher than 5 your going to make it 200 but if it's lower than 5 than your going to make it 180.

So in our case because it's 195 we're going to turn it into a 200.

I hope this helps

HELP ! On #1 ASAP for math

Answers

Answer: 1=2x     2=(0, 1/4)

Step-by-step explanation:

At a hardware store, a tool set normally costs $80. During a sale this week, the tool set costs $12 less than usual. What percentage of the usual price is the savings? Explain or show your reasoning. Use whatever strategy you would like.

Answers

Answer: 15%

Step-by-step explanation:

The usual price is $80.

This week however, the set sold for $12 less than this usual price of $80.

Savings therefore are $12 because people save $12 by buying it at $12 off.

Percentage of usual price:

= Savings / Usual price * 100%

= 12 / 80 * 100%

= 0.15 * 100

= 15%

A marker costs $0.99. A pad of paper costs $1.25 more than the marker, which is a more reasonable estimate for the total cost of both items: $2 or $3?

Answers

Answer:

$3

Step-by-step explanation:

Because you have to also think about tax of the item. Plus add them both up and it costs $2.24 without tax. Which means it's already above $2.

Kim spent $44 on eating utensils. Spoons cost $4 and forks cost $6. If she bought a total of 9 utensils then how many of each kind did she buy?

Answers

Answer:

3 spoons and 6 forks

Step-by-step explanation:

9 = x + y; x= 9-y

44 = 4x + 6y

44 = 4(9-y) + 6y

44 = 36 - 4y +6y

44 = 36 +2y

2y = 44-36 = 12

y = 12/2 =6

x= 9-y = 9-6 =3

Answer: she bought five spoons & four forks.

Explanation: 4 x 4= 16 + 6 x 4 = 24 + 4 = $44 or 4 x 5 = 20

is 8/5 proportional to 24/15 ?

Answers

Hey there!

The answer to your question is, yes, it is

Given:

[tex]\frac{8}{5}[/tex] [tex]and[/tex] [tex]\frac{24}{15}[/tex]

To see if they are equal, we can use cross products (see below for information about this, if you don't know what it is). Let us assume they are equal. This would mean that:

[tex]8*15=24*5[/tex]

Let's solve it and see if it is true:

[tex]8*15=24*5[/tex]

[tex]120=120[/tex]

Therefore, they are proportional.

Cross products

WORD DEFINITION:

Given two fractions, you can take the numerator of the first fraction multiplied by the denominator of the second fraction and it should equal the denominator of the first fraction multiplied by the numerator of the second fraction.

ALGEBRAIC DEFINITION:

Given two fractions, [tex]\frac{a}{b}[/tex] [tex]and[/tex] [tex]\frac{c}{d}[/tex], [tex]a*d[/tex] should equal to [tex]b*c[/tex]

Hope it helps, and have a terrificly amazing day!

Find IY if EY = 7.9

Can someone help?

Answers

Answer:

It kind of looks like the length of IY should be trippled (multiplied by 3 times) by EY so 3 x 7.9 = 23.7 I THINK it's 23.7

Wait for more responses if needed.

AD, BE, and CF are all diameters of the circle. The measure of angle AOB is 40 degrees. The measure of angle DOF is 120 degrees.
BOC= ___ degrees.
COD= ___ degrees.

Answers

Answer:

Angle BOC is 80 degrees

Angle COD is 60 degrees

Answer:

∠ BOC = 80°, ∠ COD = 60°

Step-by-step explanation:

∠ AOC = ∠ DOF = 120° ( vertical angles ), then

∠ BOC = ∠ AOC - ∠ AOB = 120° - 40° = 80°

-----------------------------------------------------------------

∠ COD = 180° - ∠ AOC = 180° - 120° = 60°

Find the degree of the monomial.

4g
The degree is

Answers

Answer: 1
Largest degree of monomial

what is the common difference of the arithmetic sequence -7,-4x,-x,2x,5x


Help asap please

Answers

Answer:

-7 — -4=-3

so the common diff.

-3.

Step-by-step explanation:

hopr helps

Round the nine to the nearest hundred, (947.362)

Answers

Answer:

900?

Step-by-step explanation:

.... self explanatory

12+c=n, 1.2+1c=0.25n

Answers

C=1.846153 n=13.846153

3 Mr. Howell runsmile in 6 minutes. Mr. Samuels runs 15 miles in 9 minutes. Whose speed is
greater? Explain.
4


HELPP

Answers

Answer:

Mr. Samuels

Step-by-step explanation:

Mr samuels runs a mile in 36 seconds, which is much faster than Mr. Howell.

2/3 divide by 2/5

help please

Answers

Answer: 1 /3

Explantion:

A circle has a radius of 8 cm, what is the diameter?

Answers

Answer: 16cm

Step-by-step explanation:

The radius is half of the diameter so you would have to double the radius.

Answer:

16cm

Step-by-step explanation:

The diameter of a circle is double the radius, so if a circle has a radius of 8cm, it has a diameter of 16cm because that's double 8cm.

Jennifer is making a big chili dinner for her family and bought 4000 grams of turkey for the chili. How many kilograms of turkey is
that?
A)2
B)2.5
C3
D)4

Answers

THE ANSWER IS D BECAUSE THERE R 1000 G IN KG

Answer:

D

Step-by-step explanation:

Burger patties come packed 6 in a package, and burger buns come packed 8 in a package. We want to buy the least number of patties and buns possible, while still making sure that we have exactly one patty for each bun (no leftovers). How many packages of burger patties do we need to buy?

Answers

Answer:

6 packs of buns 8 packs of patties

Step-by-step explanation:

6 x 8 = 48

8 x 6 = 48

i need help with geometry!

Answers

Answer:

The answer is 142°.

Step-by-step explanation:

We know this because corresponding angles are always congruent. Thus, in the parallel lines m || n (with the transversal) a corresponding angles is exampled. Nonetheless, x would be equal to 142°.

Am I correct? >.<

Hopefully I helped! :)

an account starts with $500 and is compounded quarterly at 5% interest how much is the account worth after 10 years

Answers

Answer:

$1500

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 20%/100 = 0.2 per year,

then, solving our equation

I = 500 × 0.2 × 10 = 1000

I = $ 1,000.00

The simple interest accumulated

on a principal of $ 500.00

at a rate of 20% per year

for 10 years is $ 1,000.00.

SOMEONE PLEASE HELP WILL GIVE 25 POINTS

Answers

Answer:

Step-by-step explanation:

g(x) is vertical translation of f(x) by -12 units

BRAINLIEST WILL BE GIVEN: (25 pts) Hikers are traveling at 3 miles per hour. They leave camp and hike LaTeX: N64^\circ WN 64 ∘ W for 2 hours. They change course to LaTeX: S23^\circ WS 23 ∘ W for 4 hours. How many miles is the trip back to camp. What bearing should they take to head back to camp?

Answers

Answer:

1222

Step-by-step explanation:

The straight line L1 passes through the points with coordinates (6, 5) and (10, 3)
The straight line L2 passes through the origin and has gradient -3
The lines L1 and L2 intersect at point P
Find the coordinates of P.

Answers

Answer:

The coordinates of point p are:

x = -3.2

y = 9.6

Step-by-step explanation:

A linear relationship can be written as:

y = a*x + b

where a is the slope and b is the y-axis intercept.

For a line that passes through the points (x1, y1) and (x2, y2), the slope can be written as:

a = (y2 - y1)/(x2 - x1).

Then if we know that L1 passes through the points (6, 5) and (10, 3) the slope of this line will be:

a = (3 - 5)/(10 - 6) = -0.5

Then this line will be something like:

y = -0.5*x + b

To find the value of b we can just replace the values of one of the points in the above equation. For example if we use the point (6, 5), this means that:

x = 6

y = 5

Then we get:

5 = -0.5*6 + b

5 = -3 + b

5 + 3 = b

8 = b

Then the equation for line L1 is:

y = -0.5*x + 8

Now, for line L2 we know that it has a gradient -3 (for linear equations, the gradient is the same as the slope)

Then line L2 has a slope equal to -3

y = -3*x + b

And we know that this line passes through the origin, (0, 0)

Then if we replace the values of that point in our equation, we get:

0 = -3*0 + b

0 = b

Then line L2 is:

y = -3*x

Then our two lines are:

y = -0.5*x + 8

y = -3*x

Now we want to find the point where these lines intersect. The lines will intersect in one point that belongs to both lines, then we can use the relation:

-0.5*x + 8 = y = -3*x

-0.5*x + 8 = -3*x

now we can solve this for x.

-0.5*x + 8 = -3*x

8 = -3*x + 0.5*x

8 = -2.5*x

8/-2.5 = x = -3.2

Now we need to evaluate one of the lines on this value, i will use line L2

y = -3*(-3.2) = 9.6

Then we can conclude that the lines do intersect in the point:

x = -3.2

y = 9.6

this point is written as: (-3.2, 9.6)

Find the value of x. Round your answer to the nearest tenth.
Help please!

Answers

Answer:

21.47

Step-by-step explanation:

I just used the Pythagorean theorem

What is /-3/*-6?

When you answer could you please explain to me why the answer is that?

Answers

|-3|=3 right?
Then it is
3*-6=-18

please help me i would really like the help

Answers

Answer:

HL

Step-by-step explanation:

Since the ray BD bisects angle ABC, we know angle ABD and angle CBD are congruent through the definition of an angle bisector. Segment AD and segment CD are also congruent because they are equidistant from the bisector. Lastly, segment BD is congruent to segment BD through the reflexive property of equality. This gives the triangles congruency through HL theorem.

90 is 75% of what number

Answers

Answer:

120

Step-by-step explanation:

90 x 100 ÷ 75 = 120

Please help!! will mark brainlyest!!!
find the measure of angle b
Answer all 4 please

Answers

9 is 130°
10 is 43°
11 is 55
12 is 27

Answer: 130, 43, 55, 27

Step-by-step explanation:

9) 130 / it's supplementary to 180

10) 43 / its vertical to 43 meaning its 43

11) 55 / will add up to 360 meaning b = 55

12) 27 / its a 90-degree angle with 63 degrees needing 27

Other Questions
Which word best completes the sentence?Try to see the issue from a different Which substance is made up of molecules that can have temporary dipoles?a. CO2b. NH3c. N2d. H2O I. Above lone woodland ways that led To dells the stealthy twilights tread The west was hot geranium red; And still, and still, Along old lanes the locusts sow With clustered pearls the Maytimes know, Deep in the crimson afterglow, We heard the homeward cattle low, And then the far-off, far-off woe Of "whippoorwill!" of "whippoorwill!"II. Beneath the idle beechen boughs We heard the far bells of the cows Come slowly jangling towards the house; And still, and still, Beyond the light that would not die Out of the scarlet-haunted sky; Beyond the evening-star's white eye Of glittering chalcedony, Drained out of dusk the plaintive cry Of "whippoorwill," of "whippoorwill."III. And in the city oft, when swims The pale moon o'er the smoke that dims Its disc, I dream of wildwood limbs; And still, and still, I seem to hear, where shadows grope Mid ferns and flowers that dewdrops rope, Lost in faint deeps of heliotrope Above the clover-sweetened slope, Retreat, despairing, past all hope, The whippoorwill, the whippoorwill.Whippoorwill - a nocturnal bird with a distinctive call that is suggestive of its nameQuestion 1Part AWhat is a theme of The Whippoorwill?People sometimes long for what they cannot have.In order to move forward, people must leave the past behind.Nature soothes the heart and calms the mind.There is a balance between nature and the city.Question 2Part BHow does the theme in Part A develop in the poem?The woeful sound of the whippoorwill echos the despair the speaker feels living in the city.The speaker thinks he hears the sound of the whippoorwill while walking in the city.The city sky is filled with cloudy, gray smoke and it makes the speaker feel sad that the moon is hidden.The speaker recalls his fondest memories of nature while living in the city. In ABC, angle C is a right angle. Which statement must be true A food ingredient that is prepared by scraping from the outer, colorful skinof unwaxed citrus fruits. a. Zestb. Mincec. Sauted. Whip Plz help me it will mean everything I beg u plz Need some help working these out The study of developmental biology shows thatA. closely related species will show similarities in embryos.B if species have changed over time, their genes should have changed.C closely related species will show similarities in amino acid sequences.D distantly related species will show similarities in anatomy. Please anyone help anyway you can solve for r in the parallelogram A pizza store sold 36 pepperoni pizzas in a day, which was 24% of their pizza sales.What was the total number of pizzas sold that day? Question 13 (3 points).Which one of the following is not a scientific variable?independentstatementO controldependent How did the New Deal address the problems of the Great Depression? 9. Rob usa el clculo mental para resolver 90 30.Dice que 9 decenas menos 3 decenas son6 decenas, o 60. Esto es verdadero o falso?Encierra tu respuesta en un crculo.Verdadero oFalso A line's y -intercept is 10,and its slope is 9 . What is its equation in slope-intercept form? John wants to buy a new motorcycle. The tax rate is 9%. How much tax willhe pay if the motorcycle cost is $4500? (i need this quickly, i'm trying to study for my math test tomorrow but i don't even know how to do the math- pls help!) In your opinion, what cause of WWI was most significant (important)? Explain in a short paragraph Write a letter to your uncle asking for three things you need to assist you in your studies. PLEASE ANSWER QUICK WILL GIVE BRAINLYPlease select the word from the list that best fits the definition An example of a weakness in bureaucracies. bureaucracy formal organization rationality red tape reasonability stability Hhhhh eeee llllll ppppp MMMMM EEEEEE PPPP LLLLL SSSS THX